Machine for beveling oars



Sept. 28, 1943. H. RONQUIST 2,330,334

MACHINE FOR BEVELING OARS Filed Nov. 14, 1941 3 Sheets-Sheet 1 Inventorf/a/rrzy 5021 714:5 2 A A [to may,

Sept. 28, 1943. H.RONQU!$T 21,330,384

MACHINE FOR BEVELING OARS Filed Nov. 14, 1941 5 Sheets-Sheet 2 InventorQ Harr fiowfwzijf' Ema/5w,

A ttoruey Sept. 28, 1943.. H. RONQUIST MACHINE FOR BEX IELING OARS FiledNov. 14, 1941 3 Sheets-Sheet 5 Inventor Harry Eon ans B) W [I A [tamePatented Sept. 28, 1943 UNITED' STATES PATENT. :OFFICE c '2,330,384

' ,MACHINE FOR BEVELINGYOARS, Harry Ronquist, Ketchikan,Territcryof'dlaska Application November 14, 1941, see-1a Nb. 119,213soiaims. (01. 144 444) My invention relates to improvements in ma?chines for beveling oar blades, the principal object in View being toprovide a simply constructed automatic machine for beveling the sides ofsaid blades, quickly, accuratelyand smoothly to the shank of the oar,and which is economical to manufacture, install and service, and adaptedto form any shape and size blade.

To the accomplishment of the above and subordinate objectspresently'appearing, 'a preferred embodiment of my invention has beenillustrated in the accompanying drawings, set forth in detail inthesucceeding description,and de- Figure 5 is a View in vertical sectiontaken on the line 5-5 of Figure (l, I

Figure 6 is a View in vertical section taken on the line B6 of Figure2,

Figure 7 is a view in vertical section taken on the line 1-1 of Figure 2and drawn'to an enlarged scale,

Figure 8 is a detail view in bottom the side clamps, and

Figure 9 is a fragmentary view/in top plan plan of of the carriagetracks and the rack and pinion drive.

Fig. 10 is a view in vertical transverse section,

taken on line Iii-i0 of Fig. 2.

Referring now tothe drawings by numerals,

as illustrated, the operating parts of V my im-- proved machine aremounted on an elongated;

frame structure including a pairof post -like legs I spacedapart'transversely at the front end of the frame, a single, similar leg2 at the rear end of said frame, and an intermediate pair of similarlegs 3 spacedsimilarly to legs I and locatedsubstantially mid-waybetween the legs Ifand Z. ,1

Vertically adjustable means for supporting an oar in horizontal positionis provided as follows Intermediate the pairs of legs- I, 3' is a pairof housings secured to the under side thereof jad jacent opposite endsof the bar and which are bolted thereto,'as at 6, the housings 5 atcorresponding endsof the bars 4 being arranged in opposed pairs alignedtransversely of the frame and spaced apart in'each pair. the-housingstare vertically slotted, as at 1, and

each housing'is provided with an open bottom;

closed by a cap plate 8bolted to the housing as at 9; see Figurefi'.'Extendingfrom 'what'con-' stitutes the rear ends of the pair of bars-4,in

endsof the pairsfof legs I, 3 and between the legs Foiverticallyadjusting the bars 4, l I, means are provided comprising apair of transverse rock shafts l5, IBeXtending through theopposed pairsof eccentric housings 5, respectively, by way of the slots 1'! therein,and a similar shaft l1 similarlyexten'ded through the eccentric housingl2, saidfshafts having eccentrics l8 fast thereon Within the housings 5,I2 arranged s0 that under the rotation of the shafts l5, l6, I! in oneand, the same direction, the bars 4, I I will be elevated.

The shafts [5, l6 are journaled at their ends in pairs of bearingbrackets I9, 29; respectively. ex

tending horizontally from the .pairsof legs L3, respectively, andsuitably bolted, thereto as at ZI. Crank arms 22, 23, 2.4 depend fromthe shafts I5,

I 6-, ll, respeet vely,*with one end fast thereon;

Link s 25, 26 "suitably pivotedto the other ends of,said crank arms 22,23, 24 connect the latter together for operation in unison. Fast ononeend of the shaft l6,v which as will be seen is arrangedadjacent the rearends of the bars 4, is

- an upstanding arm 21 for operating the shaft 16,

horizontally-disposed,laterally spaced bars "4 7 arranged upon oppositesides of the longitudinal center of the frame, respectively. Each'b ar4' is supported by a pair] of subjacent; eccentric erid i foremost andover, meter 4.

clamp ,28 comprises a" suitable plate-like member.

and consequently through the crank arms 22, 23, 24 and links 25, 26,operating the shaft l5, H

in the proper direction to elevate the bars 4, IL

pair' of end clamps 28, 29' are provided "on thebars 4 and the bar] I,respectively, for mountingan 'oarA on the same'to extend lengthwisein'the "longitudinal center of the machine, blade The front The sides ofadapted to bear against the front end of the car A and which is slidablymounted on the bars 4 for adjustment along the same into different setpositions as established by a suitably arranged hand screw 3| threadedinto the clamp. The rear clamp 29 comprises a sleeve 32 slidably mountedon the bar H for adjustment in the same manner as clamp 28 intopositions established by hand screws 33, said sleeve having a forwardlyextending in 34' thereon adapted to extend into the rear hand grip endof the shank of the car A.

A pair of side clamps for engaging the blade of the oar A upon oppositesides thereof is mount j ed in opposed relation in the bars 4,respectively.

Each side clamp comprises a head 35 fixed eceentrically on the upper endo-fa spindle '36 journaled in the bar 4 in upright position and having acrank arm 3'! fast on its lower end, the arrangement being such thatunder swinging of the crank arm in opposite directions, the head 35 willbe rotated into and from frictional clamping relation to the blade ofthe car A. The-hand lever 38 pivoted, as at 39, on the bar I I ioperatively connected to the crank arms 31 by a rod 40, so that byoperation of said lever in opposite directions i,

said heads 35 may be rotated intoand from clamping relation with respectto opposite sides of the blade of the oar A to hold the said blade rearof the blade, this clamp comprising a fixed jaw plate 4| upstandingfromone bar 4, and-an opposed movable jaw plate 42 suitably mounted on ahand screw 43' threaded into the plate 4! for turning to move theplate42 toward and fromclamping relation to the plate 4|;

For beveling the blade of the oar A, a pair of opposed, rotary, cylinderlike cutter are provided upon opposite sides of the longitudinal cen--ter of the machine, said cutters converging axially upwardly to impartthe usual bevel to said blade from the longitudinal center of the latterto whichever edge of said blade is arranged uppermost. For reasonspresently seen, the cutters 44 are mounted ina pair of suitable bearings45 which are swingably suspended from an overhead carriage 46 so thatsaid bearing 45, and cutters .may pivot laterally to vary. thedegreeofbevel cut thereby. The mountings -,for the bearings 45 comprisetrunnions 41, theaxes of which extend lengthwise of the machine, andbearing ears 48 depending from said carriage. The cutters 44 are fastupon the upper ends of a pair of cutter driving shafts 49 convergingupwardly upon opposite sides of the longitudinal center of the machineand suitably journaled at their upper ends in bearings 45. The cutterdriving shafts 59 are connected at lower ends, by friction clutches'50,- to the upper ends of a pair of armature shafts 5| of a pair ofcutter operatii'ig motors 52, said armature shafts being axially alignedwith the cutter driving shafts 49, a will be understood. A pair of motorSupporting, frames 53 are suspended from the trunnions 4 to swing aboutthe axes of the latter so that the motors 52 may swing laterally. A pairof rooved rollers 54 rotatably mounted on the lower ends of the armatureshafts5l, respectively, rideon a pair of track. rail 55 extendinghorizontally, lengthwise of the machine upon opposite sides of saidlongitudinal center of the latter. The track and the ends thereof arejournaled in bearings 56 bolted, as at 51, to a pair of cross-bars 58which, in turn, are bolted, as at 59, to the pairs of legs I, 3,respectively. 7

The carriage 15 comprises a rectangular plate 50, corner pairs oflaterally spaced hangers 6i upstanding from said plate, and concaverollers 62 journaled between the hangers G! of said pairs and runningupon a pair of parallel, laterally spaced tracks 33 extendinglengthwiseupon opposite sides of the longitudinal center of the machine above thecarriage with the ends thereof suitably fixed, by plates fi l bolted tocross-bar 55 extending between the pairs of legs I, 3.

Surmounting the plate 69 of the carriage 05 is a reversible carriagepropelling motor 66 connected by a belt and pulley drive 6'1 to atransmission, designated 68, fixed on the carriage plate it-andincluding a driving gear pinion 69 i meshing'with a rack bar 10extending along the side of and fixed to one of the tracks 63.

A suitable reversing switch H isfixed to one of the legs 3 andoperatively connected by any suitable wiring, not shown, in circuit withthe motor 63 to reverse the same. A link 12 operatively connects thebeforementioned arm 2'! to said switch H, the arrangement being suchthat when the arm 21' is operatedto cause elevation of the bars 4, H andthe car A, in the manner already described, said arm 21' will, throughthe operating connection '52, operate the switch 7 l.

The tracks, 63 and the rack '50 are provided adjacent their rear endswith a downwardly curved stretch,- M, in the track,-and 75 in the rack18, and for a purpose presentlydescribed.

Referring now tothe operation, an oar A with the shank formed and theblade blocked out in the rough and in the form of an elongated rectangleis secured in place on the described oarsupporting structure, i. e., thebars 4 and I I, with the blade standing on edge and secured in placebymeans of the described front and rear clamps 28, 29,- the, eccentricheads 35 ofthe described side clamps, and the clamps H, 32, the blade ofthe oar A being arranged lengthwiseso that its rear end, or in otherwords its juncture with the shank-,- is below the downwardly curvedstretches M of tracks 63 and the corresponding stretch'lfi of the rack79. The cutters 4 3, cutter carriage "l5, and parts carried by thelatter should be previously set forwardly of the blade ofthe oar Aeither by operation of the motor under control of any appropriateswitch, not shown, or manually.

The motor 65 is next started to drive the carriage 46 and parts carriedthereby rearwardly on the tracks 53 and the cutter operating motors 62are started by means of any suitable control, not shown, to drive thecutters in reverse direction, relatively, to efiect cutting thereby. Asthe carriage &5 travels rearwardly, the cutters M bevel the uppermostlongitudinal half) of the blade of the oar A. As said cutters lrapproach rails 55 curve laterally outwardly, rearwardly in divergingrelation for a purpose presently see the juncture of the blade with theshank of the car A, the rearmost rollers 62 enter the curved stretches Mof track 53 and cause the carriage G5 to tilt rarwardly and downwardlyand thereby lower the cutters 44 so that the blade is round{ be ,clear,swinging'the cutter driving, motors 51 porting structure, i. e., thebars 4, II, said arm 2'! being moved rearwardly in this operation andoperating the reversing switch 1| to cause the carriage driving motor-66to reverse. The elevation of the oar-supporting structure positions thecar A for. further beveling under return travel of the carriage 66 andoperation of the cutters 64 in a manner which will be clear. Thedescribed eccentrics l3 frictionally engage the tops of the housings 5,l2 and interlock therewith to thereby hold the oar-supporting structureelevated and the arm 21 in a rearward position. At the limit of forward,reverse travel of the carriage 46 and the cutters M, the links 21 maybeoperated manually to lower the carsupporting structure and return thearm 21 from switch operating position. The tracks 55 being journaled, asdescribed, are free to swing vertically under engagement of the rollers54 therewith and thereby compensate for outward swinging and inwardswinging of the motors 52 and parts driven by the latter. The functionof the curved stretch 75 of the rack M is to maintain the describedcarriage drive in operation during tilting of the carriage.

In actual practice the described machine has been found highly eiiicientin turning out oars rapidly and of uniform design, relatively, and

at approximately the rate of one a minute.

The foregoing will, it is believed, suihce to impart a clearunderstanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modificationwithout departing from the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the subjoinedclaims.

What I claim is:

1. In a machine of the class described, a horizontally disposedelongated oar supporting structure, means to secure an oar thereonin'horizontal position with the blade of the car standing on edge, andoar beveling mechanism constructed and arranged to travel along oppositesides of said blade, and means to adjust said supporting structurevertically under travel of said mechanism comprising rotary cams spacedapart longitudinally of said structure and supporting the same, an armoperatively connected to one cam for swinging movement to rotate the camand interposed in the path of travel of said mechanism, and devicesconnecting said cams for rotation in unison.

2. In a machine of the class described, a horizontally disposed oarsupporting structure, means to secure an oar thereon in horizontalposition with the blade of the car standing on edge, and car bevelingmechanism constructed and arranged to travel along opposite sides ofsaid blade, said mechanism comprising a pair of op-' posed cuttersrotatable about axes upwardly con-,

verging relatively, a pair of motors below said cutters having armatureshafts extending therethrough in upright position and axial alignmentwith said cutters, respectively, operating connections between the upperends of said armature shafts and said cutters, respectively, a pair ofhorizontal tracks, and a pair of grooved rollers on the lower ends ofsaid armature shafts run ning on said tracks, respectively.

3. In a machine of the class described, a horizontally disposed oarsupporting structure, means to secure an oar thereon in horizontalposition with the blade of the car standing on edge, and car bevelingmechanism constructed and arranged to travel along opposite sides ofsaid blade, said mechanism comprising a pair of opposed cuttersrotatable about axes upwardly converging relatively, and swingable abouthorizontal axes to vary the angle of convergence thereof, a pair ofoperating shaftsdepending from said cutters, respectively, axiallythereof, a pair of horizontal tracks flaring laterally, relatively, anda pair of grooved rollers on the lower ends ofsaid shafts running onsaid tracks whereby the cutters are swung by said shafts as an incidentto travel of said mechanism and to thereby vary the angle of convergenceof the cutters.

4. In a machine of the class described, a horizontally disposed oarsupporting structure, means to secure an oar on said structure inhorizontal position with the blade standing on-edge, tracks above saidstructure extending lengthwise longitudinally thereof, a carriagetraveling along said tracks, a pair of rotary motor operatedcutterssuspended from said carriage for travel along opposite sides ofsaid blade under travel of the carriage, a motor drive for saidcarriage, said cutters being rotatable about axes converging relatively,and means to vary the converging relation of said axes as an incident totravel of said carriage, said tracks having downwardly bowed bendstherein for lowering said carriage to correspondingly lower said cuttersandcause the cutters to round off the blade at one end thereof.

5. In a machine of the class described, a horizontally disposed oarblade supporting structure vertically adjustable, tracks above saidstructure extending lengthwise longitudinally thereof, a motor drivencarriage traveling along said tracks in opposite directions,respectively, between opposite limits of movement, a pair of rotarycut.- ters suspended from said carriage to travel along opposite sidesof said blade under travel of the carriage, and carriageoperated meansfor adjusting said structure in one'limit of movement of said carriage,and a switch for reversing said motor operated by said carriage in saidlimit of movement thereof.

HARRY RONQUIST.

